Integer overflow in Perl - CVE-2020-10543

Detailed vulnerability description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to integer overflow in nested regular expression quantifiers. A remote attacker can pass specially crafted data to the application, trigger integer overflow, leading to heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

How to mitigate CVE-2020-10543

Sources

• https://github.com/Perl/perl5/blob/blead/pod/perl5303delta.pod
• https://github.com/perl/perl5/commit/897d1f7fd515b828e4b198d8b8bef76c6faf03ed
• https://github.com/Perl/perl5/compare/v5.30.2...v5.30.3
• https://security.gentoo.org/glsa/202006-03
• https://security.netapp.com/advisory/ntap-20200611-0001/